import Vue from "vue";
// v-dialogDrag: 弹窗拖拽
Vue.directive('dialogDrag', {
        bind(el, binding, vnode, oldVnode) {
            const dialogHeaderEl = el.querySelector('.el-dialog__header')
            const dragDom = el.querySelector('.el-dialog')
            dialogHeaderEl.style.cursor = 'move'

            // 获取原有属性 ie dom元素.currentStyle 火狐谷歌 window.getComputedStyle(dom元素, null);
            const sty = dragDom.currentStyle || window.getComputedStyle(dragDom, null)

            dialogHeaderEl.onmousedown = (e) => {
                // 鼠标按下，计算当前元素距离可视区的距离
                const disX = e.clientX - dialogHeaderEl.offsetLeft
                const disY = e.clientY - dialogHeaderEl.offsetTop

                // 获取到的值带px 正则匹配替换
                let styL, styT

                // 注意在ie中 第一次获取到的值为组件自带50% 移动之后赋值为px
                if (sty.left.includes('%')) {
                    styL = +document.body.clientWidth * (+sty.left.replace(/\%/g, '') / 100)
                    styT = +document.body.clientHeight * (+sty.top.replace(/\%/g, '') / 100)
                } else {
                    styL = +sty.left.replace(/\px/g, '')
                    styT = +sty.top.replace(/\px/g, '')
                }

                document.onmousemove = function(e) {
                    // 通过事件委托，计算移动的距离
                    const l = e.clientX - disX
                    const t = e.clientY - disY

                    // 移动当前元素
                    dragDom.style.left = `${l + styL}px`
                    dragDom.style.top = `${t + styT}px`

                    // 将此时的位置传出去
                    // binding.value({x:e.pageX,y:e.pageY})
                }

                document.onmouseup = function(e) {
                    document.onmousemove = null
                    document.onmouseup = null
                }
            }
        }
    })
    /**权限指令**/
Vue.directive('has', {
    bind: function(el, binding) {
        Vue.nextTick(function() {
            if (!Vue.prototype.$_has(binding.value)) {
                el.remove();
            }
        })
    }
});
//权限检查方法
Vue.prototype.$_has = function(value) {
    let isExist = false;
    let buttonpermsStr = sessionStorage.getItem('element');
    if (buttonpermsStr == undefined || buttonpermsStr == null) {
        return false;
    }
    let buttonperms = JSON.parse(buttonpermsStr);
    for (let i = 0; i < buttonperms.length; i++) {
        if (buttonperms[i].functionCode.indexOf(value) > -1) {
            isExist = true;
            break;
        }
    }
    return isExist;
};
